The River Nagavali also known as Langulya is one of the main rivers of Southern Odisha and Andhra States in India, between Rushikulya and Godavari basins.

Origin and course

Nagavali River originates from a hill near Lakhbahal village in Thuamul Rampur block of Kalahandi District. It touches Nakrundi, Kerpai areas of Kalahandi, Kalyansinghpur, Jaykaypur, and Rayagada of Rayagada district of Odisha and merged in Bay of Bengal near Kallepalli village near Srikakulam after crossing by the side of Srikakulam of Andhra Pradesh. It is an independent river with its own basin. The total length of the river is about 256 km, of which 161 km are in Odisha and the rest in Andhra Pradesh. The catchment area of the basin is 9510 km2. Nagavali is an interstate river with 4462 km2 and 5048 km2 river basin area located in Odisha and Andhra Pradesh respectively. The river basin receives 1000 mm average rainfall annually. The yearly water availability in the river basin at Narayanapuram barrage is 1.117 billion cubic meters on average. The uplands of the river basin are hilly areas with predominantly tribal populated. It drains parts of the Kalahandi, Rayagada and Koraput districts of Odisha and Srikakulam, Vizianagaram districts of Andhra Pradesh.

Tributaries

The main tributaries of the River Nagavali are Jhanjavati, Barha, Baldiya, Satnala, Sitagurha, Srikona, Gumudugedda, Vottigedda, Suvarnamukhi, Vonigedda, Relligedda and Vegavati. The Suvarnamukhi river takes its birth in the hills of Salur mandal and takes an eastern direction and finally join the Nagavali at Sangam village in Vangara mandal of Srikakulam District. Vegavathi originates in pachipenta hills of Pachipenta Mandal.

Towns and cities

Irrigation projects

Pumped storage hydropower projects

Nearly 9200 MW capacity pumped-storage hydropower plants can be installed using the existing reservoirs to meet the renewable and green power needs of the Uttara Andhra region.